SIZE

INSIDE
DIAMETER

OUTSIDE
DIAMETER

THICKNESS

APPROX.
PIECES
PER LB.

USS FLAT WASHERS

3/16

1/4"

9/16"

3/64"

362

1/4

5/16"

3/4"

1/16"

149

5/16

3/8"

7/8"

5/64"

90

3/8

7/16"

1"

5/64"

67

7/16

1/2"

1-1/4"

5/64"

41

1/2

9/16"

1-3/8"

7/64"

26

9/16

5/8"

1-1/2"

7/64"

22

5/8

11/16"

1-3/4"

9/64"

13

3/4

13/16"

2"

5/32"

9.1

7/8

15/16"

2-1/4"

11/64"

6.5

1"

1-1/16"

2-1/2"

11/64"

5.3

1-1/8

1-1/4"

2-3/4"

11/64"

4.5

1-1/4

1-3/8"

3"

11/64"

3.8

1-3/8

1-1/2"

3-1/4"

3/16"

3.0

1-1/2

1-5/8"

3-1/2"

3/16"

2.6

1-5/8

1-3/4"

3-3/4"

3/16"

2.34

1-3/4

1-7/8"

4"

3/16"

2.0

1-7/8

2"

4-1/4"

3/16"

1.77

2"

2-1/8"

4-1/2"

3/16"

1.59

2-1/2

2-5/8"

5"

15/64"

1.04

3"

3-1/8"

5-1/2"

9/32"

.078

SIZE

INSIDE
DIAMETER

OUTSIDE
DIAMETER

THICKNESS

APPROX.
PIECES
PER LB.

SAE FLAT WASHERS

#6

5/32"

3/8"

3/64"

790

#8

3/16"

7/16"

3/64"

590

#10

7/32"

1/2"

3/64"

435

1/4

9/32"

5/8"

1/16"

222

5/16

11/32"

11/16"

1/16"

192

3/8

13/32"

13/16"

1/16"

140

7/16

15/32"

59/64"

1/16"

105

1/2

17/32"

1-1/16"

3/32"

55

9/16

19/32"

1-3/16"

3/32"

45

5/8

21/32"

1-5/16"

3/32"

36

3/4

13/16"

1-1/2"

9/64"

21

7/8

15/16"

1-3/4"

9/64"

16

1"

1-1/16"

2"

9/64"

12

1-1/8

1-3/16"

2-1/4"

9/64"

9.2

1-1/4

1-5/16"

2-1/2"

5/32"

6.3

1-1/2

1-7/16"

3"

3/16"

4.25